Product Reference Guide 63Chapter 5Problem IsolationThe troubleshooting references provided in this section should be used in theevent of a suspected functional problem. This information will assist you inidentifying and resolving any problems.The scanner/scale has a number of features that indicate when a scanner, EASdeactivation system, or scale problem occurs. The unit may:• emit a series of tones• light the Health & Status Indicator (FRU status) display• flash its indicator LEDs• display error codes on the Remote Display (if installed)Three error reporting modes are used: Power-Up Selftest, Operational tests andDiagnostic tests. These test sequences are explained on the following pages.Power-Up SelftestThe Power-up Selftest is a pre-operational series of tests that must be success-fully completed before the scanner indicates readiness for operation. This pre-operational period is the time between power-up and normal operation duringwhich the software, firmware and hardware are being tested. These testsensure that all subsystems are fully functional before turning on. Refer toOperation and Maintenance on page 49 for a more detailed description of thisand other scanner and scale modes.Operational TestsThese are the tests that run continually during Normal Operation and SleepMode. Firmware checks all subsystems, accessory connections and the POSinterface to verify everything is operating normally. If a problem is detected atany time, a long, low tone is sounded, an error code is shown on the Health &Status Indicator, and operation may be halted. If you press the Scanner ControlButton at that time, a series of tones will be sounded that matches the errorcode displayed.
